This alert is in force until 4 September 2026, 01:00 UTC.
It is the 129th strongest of the 178 detections recorded within 20 km of this point since 15 March 2026. The last comparable one was on 2 September 2026.
What the source measured
NOAA reported: Severe Thunderstorm Watch issued September 3 at 12:12PM CDT until September 3 at 8:00PM CDT by NWS Grand Forks ND
An estimated 16,788 people live within 50 km of this point.
Nearby, since 15 March 2026
- September 2, 2026 · score 28 · 0.0 km
- August 9, 2026 · score 34 · 0.0 km
- August 4, 2026 · score 34 · 0.0 km
How we know
One source: NOAA. Not yet confirmed by a second, independent source.
Our own score for this event is 28 out of 100, at 81 % confidence.
The score is ours, computed from intensity, exposed population and local history — not the source’s.
Computed under scoring rules v4. Rows carrying other versions were judged by different rules and are not directly comparable.
Event Data
| Type | Severe Weather |
| Severity | Medium |
| Calamity Score (ours) | 28 / 100 |
| Our confidence | 81% |
| Coordinates | 46.0000, -94.3000 |
| Nearest City | Sartell (43 km) |
| Population Exposed | 16.8K within 50 km |
| Impact Tier | significant |
| Timestamp | 2026-09-03T17:12:00.000Z |
| Source | https://api.weather.gov/alerts/urn%3Aoid%3A2.49.0.1.840.0.dd04b171efcdc5be03ff4064cd01ca9e52e19681.001.1 |
Score Breakdown
Technical Details
| Event | Severe Thunderstorm Watch |
| Urgency | Future |
| Certainty | Possible |
| AreaDesc | Becker, MN; Beltrami, MN; Clay, MN; Clearwater, MN; Hubbard, MN; Mahnomen, MN; Marshall, MN; Norman, MN; Pennington, MN; Polk, MN; Red Lake, MN; Barnes, ND; Cass, ND; Grand Forks, ND; Griggs, ND; Steele, ND; Traill, ND; Walsh, ND |
| Headline | Severe Thunderstorm Watch issued September 3 at 12:12PM CDT until September 3 at 8:00PM CDT by NWS Grand Forks ND |
| Expires | 2026-09-03T20:00:00-05:00 |
| SenderName | NWS Grand Forks ND |
| HasExactCoords | false |
Safety Information
Always follow official guidance from your local emergency management agency. This platform provides scientific monitoring data and is not a substitute for official warnings. If you are in immediate danger, contact your local emergency number.
Series begins 8 March 2026. Comparisons refer to that period only. Collection gap: 14-26 August 2026.
This data is aggregated algorithmically from scientific sources. Not a replacement for official emergency warnings.
Want to know when something happens in this area?
Calamity.live data shows a weather event with CalamityScore 28/100 (United States), based on data from noaa. Source: Calamity.live, a platform aggregating real-time data from 185 scientific monitoring sources.